Clinically tested & fully automatic. Large easy to read digital LCD screen. Displays month, date & time. 2 user mode. 60 memory each. Irregular heartbeat indicator. World Health Organization risk category indicator. Shows systolic, diastolic pressures, as well as pulse. Also displays month day and date. Requires 2 "AAA" batteries (sold separately) North American Health + Wellness Blood Pressure Monitor, White, 1 Count (Pack of 1), (JB7423CS)